英文關鍵字
alert
antivirus
attack
background
computer
concept
crime
cyber
data
disk
display
encrypt
encryption
error
fraud
hack
hacker
hacking
hard
illustration
infect
infected
information
internet
laptop
loading
lock
malicious
malware
mobile
network
notification
online
petya
phishing
protection
ransomware
red
scam
screen
secure
security
smart
smartphone
spam
spyware
technology
turn
virus
wannacry